Interview Questions

Yespm T. - "First I will talk about this restaurant space in general. Types of restaurants, trends, think about how we can offer something that is differentiated to a viable buyer. Vision / mission of this product User segments - pick one Define user goals, user journey, needs/pain points Think about solutions to their pain points (10 min) Then I’d pick one or two of the solutions and define the features in more detail, as it ties to user journey. I’ll define tradeoffs **1.Restaurant sp"See full answer

Kofi N. - "const mergeIntervals = (intervals) => { const compare = (a, b) => { if(a[0] b[0]) return 1 else if(a[0] === b[0]) { return a[1] - b[1] } } let current = [] const result = [] const sorted = intervals.sort(compare) for(let i = 0; i = b[0]) current[1] = b[1] els"See full answer

Sandy L. - "Clarify Functionality: Watch is a tab in FB app where people can upload and view Videos. What's the redesign? We collapsed the reaction and comment bar so people can see more videos and spend more time watching videos. What's the objective of the redesign? To help people discover and watch more videos they'll enjoy._ Structure To decide whether or not to ship this redesign, i'd like to go over. How does the Watch Tab fit into FB's mission and what's its goal? What's the long-"See full answer

Rasheek N. - "Clarify: I have some clarifying questions I would like to get answered Is this a podcast app that uses Netflix actors/actresses/producers/etc? Is this available to everyone or just Netflix subscribers? How is this product presented? Is it apart of the Netflix app or its own separate app? Goals: First thing first is to understand Netflix. Netflix is a streaming platform that differentiates itself by being the first platform that creates its own original content. It is facing massi"See full answer

Sahil A. - "Clarifying questions: Open metrics - Number of times users open the google document on a given day 10% decline - is it a gradual decline or steep decline? (since when) Do we witness decline from a specific geography? Decline for consumers or enterprise customers? Decline from web or mobile app? Review logs or bug reports to check if there are customer issues reports Internal Determine if a particular release is causing the issue Review other metrics to check if fewer do"See full answer

Takashi M. - "First of all, I’d like to identify what is Google’s business model and Google’s presence in the emerging market. I can categorize 3 main buckets. Consumer, developer, enterprise business. Google mainly offers a free Android OS platform and several services; such as Gmail, Google Map, Youtube, and Search engine for consumers business. The consumer can use those free services in exchange for providing data. That is the main hook for the ads revenues. For the developer’s segment, Google provides"See full answer

Pathworks P. - "To answer this, I will focus my efforts on explaining the most common type of API used in most modern software development applications - the REST API. For the purpose of simplicity, I will also keep the topics of Authorization and Authentication out of the mix. In essence, an API is a group of logic that takes in a specific set of inputs and responds with a specific set of outputs. This is analogous to going to a drive-thru and placing an order for a meal. When you give an API a bunch of"See full answer

Krishnan S. - "Excellent job Roshan, really liked the explanation. Which software were you using to explain the system design diagrams?"See full answer

Adam L. - "Discussed: Requirements of the system: latency language modality (assume keyboard typing) availability of data (assume cold start) success metric (accuracy of next word predicted?, or minimize false positives? -> accuracy to start) Data collection and processing: design ethical user experiments to collect typed out data design a simple tokenization strategy (word level encoding, character level encoding, byte-pair encodings, and discuss tradeoffs) collect data, and split"See full answer

Wayne W. - "def hasgoodsubarray(nums, k): if not nums: return False prefix = 0 table = set([0]) for i in range(len(nums)): prefix += nums[i] if prefix % k in table: return True table.add(prefix % k) return False `"See full answer

Bg - "Clarifying question: Am I the first one to notice the fire, or there are people already on it? Extent and source of fire - I am assuming it's localized and I am inside the data center, safe so far. Response: It is an emergency. I will do and coordinate the people to do the following in parallel, if I am the first one to know. Get immediate attention of folks in the data center. Get someone and many people to call 911 and security. Coordinate to have people in need evacuated. Turn off th"See full answer

corrie881 - "The question is about Netflix users decreasing 10%, not about delivery app."See full answer

Alfred O. - "We can use dictionary to store cache items so that our read / write operations will be O(1). Each time we read or update an existing record, we have to ensure the item is moved to the back of the cache. This will allow us to evict the first item in the cache whenever the cache is full and we need to add new records also making our eviction O(1) Instead of normal dictionary, we will use ordered dictionary to store cache items. This will allow us to efficiently move items to back of the cache a"See full answer

Kay T. - "How I would approach this question: Understand the goal of the customer service platform: What is the main business goal of this company and how is the customer service platform serving the company goals? For this question, I'm assuming the user journey is that customers come to the customer service platform when they run into issues. Thus, ultimately the customer service platform is feeding into the top line business metric of customer retention. Do customers keep"See full answer

Sankar S. - "We will not always have all the required data to make a decision quickly. We need to work with ambiguity effectively by tying up the available facts with intuition."See full answer

So X. - "Why is the value of an Android user only considering incremental clicks on ads instead of all clicks on ads?"See full answer

Chetan R. - "Is this in-memory key value store or Disk based as store they are trying to make? Can someone help me with this"See full answer

Scott S. - "Great question! Last year, we were working on a critical project to develop a real-time risk analytics platform. This platform was designed to provide our traders with instantaneous risk metrics, allowing them to make informed decisions in a fast-paced trading environment. Midway through the project, we faced a significant issue: our chosen data processing framework was not performing as expected under the high data throughput required by our trading algorithms. This was causing unacceptable lat"See full answer

Ushita S. - "The back-of-the-envelope calculation is very well done!"See full answer

Nikita G. - "Thanks for the question. The way I would like to proceed with this question is firstly, to get more context about the problem by asking some clarifying questions and narrowing the scope. Then, I would like to break the problem into smaller components to understand where exactly our problem lies. Then make a user journey for that particular area and identify the technical and non-technical factors which might affect this change specific to our company/product. Post that, I'll analyse the external"See full answer